diff --git a/app/templates/views/features/letters.html b/app/templates/views/features/letters.html
index 7d6056872..e1abc0a17 100644
--- a/app/templates/views/features/letters.html
+++ b/app/templates/views/features/letters.html
@@ -17,7 +17,7 @@
     <h1 class="heading heading-large">Letters</h1>
     <p>GOV.UK Notify will print, pack and post your letters for you.</p>
     {% if not current_user.is_authenticated %}
-      <p><a href="https://www.notifications.service.gov.uk/register">Create an account</a> and try Notify for yourself.</p>
+      <p><a href="{{ url_for('main.register') }}">Create an account</a> and try Notify for yourself.</p>
     {% endif %}
 
     <h2 class="heading heading-medium">Features</h2>
@@ -27,7 +27,7 @@
       <li>personalise the content of your letter</li>
       <li>send bulk messages</li>
     </ul>
-    <p>You can also <a href="https://www.notifications.service.gov.uk/documentation">integrate with our API</a> to send letters automatically.</p>
+    <p>You can also <a href="{{ url_for('.documentation') }}">integrate with our API</a> to send letters automatically.</p>
 
     <h3 class="heading-small">Choose your postage</h3>
     <p>You can send letters by first or second class post.</p>
@@ -47,7 +47,7 @@
        <li>first or second class postage</li>
     </ul>
     <p>Letters can be up to 10 pages long (5 double-sided sheets of paper).</p>
-    <p><a href="https://www.notifications.service.gov.uk/pricing">See pricing</a> for more details.</p>
+    <p><a href="{{ url_for('.pricing') }}">See pricing</a> for more details.</p>
 
   </div>
 </div>